Chuck.



H. A. BORRESEN.

CHUCK.

APPLICATION FILED OCT. 14.1907.

1 153,995, Patented Sept. 21, 1915.

3 SHEETSSHEET 1.

7 'IIQ KW ..1|| IIIAIIIIIIIIIIII COLUMBIA PLANDCIRAPH (30., \VASHINGTON, n. c.

H. A. BORRESEN.

CHUCK.

APPLICATION man OCT. 14.1902.

1,153,995. PatentedSept. 21, 1915.

3 SHEETS-SHEE] 2.

Illlllllll COLUMBIA PLANOGRAPH rr wuHwr-Tnm u. c.

H. A. BORRESEN.

CHUCK.

APPLICATION FILED OCT. 14.1901.

1,153,995. PatentedSept. 21, 1915.

. a SHEETSSHEE1 a.

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HELGE A. BOR-BESEK, or 1111111111111 M HI A A SI T0 MAX W- BEL,

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T 0 all whom it 71mg concern Be it knofi'vnth'at' I, ZHELG'E A. BORRESEN, a citizen of the United "States'fresidingfin the city '01 Marquettegin thecountyfofMaT quette and State of Michigan, have invented a new and'useful 'Chuckfofiyhich t-hefollowing is 'aspeci'fication.

My invention relates to improvements in chucks, in \vhiclrthe wen: is held against and caused to prbtrurl'e'iiom from or forward plate by'a spring ""ctil-ated hdldiiig and centering member.

My chu'cl'r'is especial-1y applicable ork ing eXtreinely small material, such as Watch and clock parts, although it m'ay'b'e used to equal advantage certain fennserieav' machining. 1

The special objects or my invention are: First, tojp'ro videa chuck Whichthe Work can'be r'eadily inserted, and Which-Will automatically "centerthe "Work upon its insertion. Second, to providean efxjtensiiin check which is capable 'ofholdin-g object's ofco'n side'rable difference in size? Third, to provide adjustable means for hol'diii-ga number of sizes of objects tdcenter. attain these objects by the"inech'anism"illustrfited .iirthe accompanying arming; in E w11ie11 Figure 1, is central longitudinal section of my impro'x' eaehuck. i :'-'2; i san'e1evation' of my impmvea'chuek. Fig. "13, "is a View of the face "plate of myi'mproved chuck. Fig. 4, is a sectional viewer apo rtion of the faceplate of my cheek-showing the manner of insertion" or the centering disk. Fig: 5, is View of iiiy chllcjk ldoking in the rear'face of the perform. 'Fig. 6, is a View o'fmy"chuck lookiifg atfthe same with the face plate removed. ig. 7,is"a detailed sectional View "of the end of the spring actuated member, and tliefli'sk carried thereby with the" centering appliances proj ecting therefrom. .F 1-5;; 8, is "fa "detiail'e'd Specification of Letters :Patent.

Application file'd'bctot'er 14, 1907. Serial No. 397,327.

Fig. 10. Fig. 12, is a modification of my chuck in which the columns supporting the face plate have been replaced by Walls provided With aperturesthrough Which to insert the Work. Fig. 13', is a view partially in section of the structure shown in Fig. 12. Fig. 14, is a View partially in section of the modification shown in Fig; 12, looking in the direction of the face plate but with the face platere moved. Fig-15, shows the adaptation oftlie structureshown in Fig. 8, to the Wallsof 'a'chuck. Fig. '16, shows a modifica= tion'of the means for clamping the spring actuated 'member' at the desired point.

Similar numbers of reference refer to similar portions of the several views.

The reference numeral 1, designates an arbor Which may be screw threaded or ta pered, or fixed in any suitable manner to assemble with the head or tail stock of a lathe. Throughthe centralp'ortion of the arbor, l,"is provided the channel, 2, in which is slidably mounted the rod,'3. A portion of the rod, 3, is cut aWayto provide'the shoulder, 4, and the annular space, 5, to accommodate the compression spring, '6.

Theforward end of the'arborfl, is provided with the transversely extending platform, .7, which "I 'prefer'to make in circular form. Rising from the edge or periphery of the plat-form, 7, are the standards,"8. It is obvious that I may .e'mpldy Walls in the place of the standards "Without departing from the spirit of my invention. Upon the outer ends of these standards, 8, is mounted tl1e' face"plate,9.'

rln those styles of chucks Where it is desired to be able to change and adjust the distance between the platform, 7, and the face plate, :9, the standards, "8, are 'made'in' the form ofhollowcolumna-as shown in Fig. l0,anol rods, 10, are attached tothe 'fa ce p1ate',9, .vhich are adapted to slide in the hollow jcolumns,"'8. .Theserods "10, are provided withretluced transverse slots, 11. In the rear'o'f the platform, ,7," is provided a rotata ble' ring,"1-2,Which has provided in it aperturesof the sizeofthe rods, 10, and :adjacenfthereto other apertures of the size of there'duced portions, 11. These apertures are respectively designated loythe reference numerals 13 and 14-. .In the platform, 1-7 back of the rbtatable ring, l2,-':is'provided pression spring, 16, which abuts the channel,

15, at one end, and a pin or knob, 17, provided in the rotatable ring, 12, and extend ing into said channel,'15, to actuate or rotate the rotatable plate, 12, in the proper direction to cause the engagement of the reduced apertures, 14, with the reduced portions, 11, in the rods, 10. l/Vhen it is desired to change the distance between the platform,

7, and the face plate, 9, the rotatable ring, 12, is moved by means of the knob or pin, 17, so as to bring the apertures, 13, about the rods, 10, and the face plate, 9, is drawn from or pushed toward the platform, .-7 until the proper reduced portions, 11, are brought adjacent to the apertures, 14, when the -spring, 16, rotates the plate, 12, and causes the reduced apertures, 14, to engage with said reduced portions, 11, and prevent fur-.

ther movement of the face plate, 9.

Upon the forward end of the rod, 3, is

- provided the bracket, 18, to which is pivoted the disk, 19, the central portion of which, as clearly shown in Figs. 1 and 7, is cut away to make said disk slightly pliable. It will be seen by further reference to Figs. 1, and 7,

that said disk 19, extends above and revolves over the central portion, 20, of the rod, 3, which is in thecentral axis of' the chuck,

which is provided with'a slight indentation.

In the outer surface of the disk, 19, and in the circle which passes over said central axis of the chuck are provided various stubs or centers, 21, suitable for holding the work to be placed in the chuck. In the rear surface of the disk, 19, directly under each center or stump are provided projections, 22, which are adapted to engage the depression, 29, in the rod, 3, and accurately center the desired stump or center. Extending transversely s from near the top of the rod, 3, is the arbor, 23. Surrounding this arbor, 23, is the piece, 24, the end of which is adapted to surround the face plate, 9, and the holding of the work between said face plate, 9, and the centers, 21, so that the portion to be machined will extend through said aperture beyond the outer surface of said face-plate. In order, however, to adapt my chuck more perfectly to various characters and dimensions of work, I provide in said face plate, 9,- the. 7 eccentrically located disk, 26. This d1sk,:as

clearly shown in Fig. 4, is formed on its edges with a V -shaped cross section, 27

which fits into a vi-shaped channelin the faceplate, 9, so as to be rotatable. It will be perceived by reference to Fig. 3,

that the disk, 26,, approaches closely to the 1 edge of the face plate, 9, and rotates above the central portion of the chuck. It will be further'seen that'the portion of the plate,

26, which comes directly above the center of the chuck describes the circular path, 28.

ing various diameters suitable for thework to be performed, About the circle, 28, and near the edge of the disk, 26, I describe another circle, 30, in which Iprovide small holes, 31-, which are adapted tobe coincident with a locking pin, 32, when the apertureof the desired diameter, 29, is in the center of the chuck. r '2 The preferred form of locking device, clearly shown in Fig. 8, is providedin one of the columns, 8, or in one of the walls, as shown in Fig, 15, which may replace the col- With various points in the circle, '28, as a center I provide circular apertures, 29, havumns, 8, and comprises the locking pin,32, 7

carried upon the stem, 33, which is adapted V to'slide in a cylindrical hole, 3%, provided in column,-8. I provide in said c'ylindrical hole, 3 1, backof the stem, 33, the 00111- pression spring, 35, to actuate said pin, 32,

into engagement with one of the locking holes, 31. The walls of the column, 8,. are

out to provide the slots, 36, through to the hole, 3%, and the pin, 37, is provided in the stem, 33, extending through and protruding from said slots, 36/ A sliding collar, 38', surroundingsaid column, 8, is assembled with said pin, 37, by means whereof the pin, 32, can be withdrawn from the locking holes.

In working upon arbors provided with transversely disposed wheels or other parts, the largest aperture in the disk, 2 6,may be used, and the centers, 21, will accurately center the work. by pressing the said wheels or other parts carried by the arbor in con tact with the rear face of the plate, 26. here, however, it is desired to securely hold the front end of the work, the appropriate aperture, 29, is brought to center,

and the work is insertedfromthe back of 7 I have shown in Figs. 10 and 11, a mo k? fie d arrangement of the disk, 19, wherein in place of said disk, 19,.Iprovide a disk, 39, upon the edge'or periphery of which I provide the radiallyextending tools or centers,

10. To accommodate the disk, 39, I provide inthe top ofthe rod, 3, the slot, 11, in which r the disk, .39, revolves upon the arbor, 23, win ch in this case extends entirely through the rod, 3. By surrounding this'arbor,.23,,'

by the stop mechanism, 2 1, and not attach" ing it thereto, 1 have eliminated the liability to carry the stumps or centers away from center, by screwing up theknurled head set screw, 25. To accurately center the tools-or f centers, 40, I provide in the disk, 39, the apertures, 42, and in the rod, 3, I provide the spring actuated stop pin, 43, which is adapted to engage said apertures, 42, to center the desired stump or center. The stop pin, 43, is carried in the barrel, '44, which is screwed into the rod, 3, said barred, 44, being provided with the cap, 45, which screws thereon and having the stems of the stop pin, 43, protruding therethrough. The stem of the stop pin, 43, is attached to the outer cap, 46, which slides longitudinally upon the cap, 4-3, to disengage the pin, 43, from the hole, 42.

En Figs. 10 and 13, l have shown the chuck holding an arbor provided with a wheel and pinion. In using the chuck in this way the lar est aperture of the disk, 26, may be employed.

in Figs. 2, 5, 6, 12, 13, and 14, I have shown the set srew, 25, provided with a handle, in addition to the knurled head, which is of advantage in manipulating the chuck.

In Fig. 9, l have shown the column, 8, provided with an L-shaped slot, 36, which is adapted to engage with a pin, 37, to retain the stop pin, 32, out of engagement when t so desired.

in i igs. 12, 1:3, 14, and 16, in which the columns, 8, are replaced by integral walls extending between the platform, 7, and the face plate, 9, l have sho. n a modified form of apparatus for locking the spring actuated rod, 3, at the desired distance from the face plate, 9. in this modified form, I still employ the arbor, 28, engaging with said rod, 3, and the piece, 24, sliding longitudinally upon said arbor, 23. But with this modification 1 form the end of the piece, 24, which protrudes into a slot, 47, provided in the wall of said chuck with a slot running through it and a central elliptical aperture. Protruding into this elliptical aperture is an elliptical knob provided with a handle, 48, as clearly shown in Fig. 16. When the elliptical aperture and the elliptical knob coincide the spring actuated rod, 3, is free to more. When, however, the handle, 48, is brought into the position shown in Fig. 16, the long axis of the ellipse is brought into the short axis of the elliptical opening, and the split piece, 24, is extended to engage the walls of the slot, 47. is will be seen by further reference to F 16, the channel, 47, has an offset portion which provides the shoulder, hen the machining operation is completed, the handle, 48, is pressed backward in the direction of the arrow which releases the lock and forces the rod, 3, backward to remove the work. This same action forces the piece, 24, behind the shoulder, 49, which prevents it from again coming forward until it is required for further service.

i Vhat I claim as new, and desire to secure by Letters Patent, is:

1. A chuck adapted to support a cylindrical element mounted upon a shaft, comprising a front plate having a plurality of dilferent sized ap rtures, means for centrally locating any desired aperture, and a centering device, said centering device being adapted to engage the shaft and press the cylindrical element against the front plate, said front plate and centering device cooperating to hold the said work in place.

2. A. chuck adapted to support a cylindrical element mounted upon a shaft, comusing a front plate having an aperture, and a centering device having a plurality of dilferei'itiated centers, said centering device being adapted to engage the shaft and press the cylindrical element against the front plate, said front plate and centering device cooperating to hold the said work inplace.

A chuck adapted to support a cylindrical element mounted upon a shaft, comprising a front plate provided with an eccentrically mounted disk having a plurality of different sized apertures adapted for lo cation centrally of said front plate, and a centering device, said centering device being adapted to engage the shaft and press the cylindrical element against the front plate, said front plate and centering device cooperating to hold the said work in place.

4. A. chuck comprising a hollow arbor, a transversely extending platform on the end of said arbor, hollow columns extending from the face of said platform, a face plate, rods extending reanwardly from said face plate adapted to slide in said hollow columns, means provided in said platform adapted to engage and hold said rods in a plurality of positions, and longitudinally adjustable means projecting from the hollow in said arbor adapted to hold work to said face plate.

5. In a chuck having a hollow arbor, a face plate having a centrally located aperture carried by and in front of said arbor, a spring actuated member extending from the hollow in said arbor toward said face plate, a depression in said spring actuated member in the axial line of said chuck, a disk carried by said spring actuated member revolving over the axial line of said chuck, hav ing centering appliances attached to its outer face, adapted to be brought successively in the axial line of said chuck, and having projections upon the opposite face of said disk in'line with said centering appliances, adapted to engage the depression in said spring actuated member.

6. A chuckhaving a framework, an arbor movable longitudinally of said framework, and means for locking said arbor in any given position longitudinally of said framework without exerting transverse pressure &

against said arbor, said arbor being unsupported laterally at the point of contact of said means.

7. A chuck comprising a' framework, a

thin front plate for said framework having an opening, an annular groove about the periphery of said opening in said plate, and a thin rotatable face plate movable within said opening and held in place within said groove, and spring pressed means to hold and accurately center said face plate in any one of a j plurality of'desired positions.

8. In a chuck for alathe, a spring actuated longitudinally movable central arbor having a transverse eccentrically disposed revoluble disk, said disk comprising difien, entiated supporting tools, and means for circular rows of apertures, the innermost row being of differentiated apertures disposed 111 rotatable'relation to the central point of said face plate, and the outermost row being in rotatable cooperation with means for locking said revoluble disk.

10. A chuck comprising a framework having a spring actuated longitudinally operable central arbor, said arbor comprising a transversely disposed rotatable disk having diiferentiated supporting tools, said framework supporting a thin face plate compris ing an eccentrica-lly disposed segmental rotatable disk having differentiated apertures, the aforesaid differentiated supporting tools and the aforesaid differentiated apertures constituting complementary means for supporting objects in axial alinement of said chuck substantially as set forth.

arbor containing a spring actuated centering device, said hollow arbor having a framework supporting a thin face plate com- Pl'lSlIlg a thln revoluble disk having dlifer- -entiate d apertures, the said revoluble disk and the aforementioned centering device constituting cooperable means for engaging v in axial alinement cylindrical elements mounted upon variously sized shafts, substantially as set forth. I

In testimony whereof I hereto affiX my signature in the presence of two witnesses.

A. BORBESEN.

' \Vitnesses: H l

B NJ, T. Rooorrocsn, HELEN S. SHEDD.

Copies of this patent may be obtained for five cents each, by addressing the f Commissioner of Patents,

' Washington, D. G. 

